High Sound Quality

Intelligent Digital Servo Oversampling separate DAC Optical and coaxial digital outputs (CDX-497) Low-impedance power supply for stable signal path Display dimmer Aluminium front panel
The CDX-497 is available in titanium, black or gold in some areas.
The CDX-397 is available in titanium, black or gold in some areas.
P10017812ARTKGB-CDX497/CDX-397@NPB
CDX-497/CDX-397 Natural Sound CD Players
Convenient Operation CD-R/RW, MP3 and WMA Playback These CD players can handle CDR and CD-RW discs with ordinary songs. The CDX-497 can also plays discs with MP3 and WMA files, so users can enjoy more of their favourite music. (Note that some discs may not play.) Wealth of Playback Functions In addition to ordinary play, there are a variety of ways you can enjoy the musical selections on your CDs. Random Play plays all the songs in a random order. If you want to hear them in a certain order, you can use the 40-Track Program Play function. There are also several repeat modes: Single Track, Entire Disc, Random Play, Programme Play and A-B (for repeating all songs between two points on the disc). Auto Space Insert Lets you add a short pause at the touch of a button on the remote control while recording to ensure that there is sufficient space between selections. 3-Mode CD Text Display Get information about the CD currently playing right on the CD players display. The 3-mode CD Text display shows the CDs title, the artists name and the title of the track.
Main Specifications Frequency Response Harmonic Distortion + Noise Signal-to-Noise Ratio Dynamic Range Headphone Output (20 dB) Digital Outputs Dimensions (W x H x D) Weight
Peak Search Gives you better sounding recording by searching the disc for the loudness part and playing it for a few seconds so you can set the proper recording level. CD-Tape Synchro Rec Start Youll have smooth recording starts each time, because Synchro Rec Start puts the deck into the recording mode a few seconds before starting CD play. Front Panel Headphone Jack (CDX-497) A headphone jack is conveniently located on the front panel so listeners can quickly switch to private listening mode. RoHS Compliant This environmentally friendly unit fully complies with the EUs RoHS (Restriction of Hazardous Substances) standards. High Sound Quality Intelligent Digital Servo System Conventional tracking servo circuitry cannot completely overcome errors caused by disc defects, warpage, dust and so on. This system uses a microcomputer to monitor the signal, adjusting pickup tracking and focus, as well as spindle
CDX-Hz-20 kHz 0.5 dB 0.003% (1 kHz) 105 dB 95 dB 1 optical 435 x 87 x 287 mm 3.5 kg
motor speed, to compensate for any problems. Low-Impedance Power Supply Because every signal part affects sound quality, Yamaha uses nothing but the best. The special Low-Impedance Power Supply, for example, uses extra thick wires to ensure that power is absolutely stable even under low impedance conditions. Display Dimmer The CDX-497/397s front display dimmer function lets dim the display when you darken the room to suit your mood while listening to music. The brightness of the display can be set to Normal, Slightly Dim and Dim. Dimming the display also reduces any chance of noise interference from the LCD for highest audio quality. Aluminium Front Panel An aluminium front panel is used to effectively shield sensitive low-level circuitry from external noise and electronic radiation generated by dimmer switches, HVAC, fluorescent lighting and video displays (CRT, LCD, Plasma). Other Notable Features CD-R/RW playback compatibility 3-mode tape edit: random, automatic and manual Skip play (Track skip) Direct track access and index search Index number display and search 4-mode time display Last memory New-designed, slim and stlysh remote control unit
CDX-Hz-20 kHz 0.5 dB 0.003% (1 kHz) 105 dB 95 dB mV/32 ohms 1 optical and 1 coaxial 435 x 87 x 287 mm 3.5 kg

Product designs and specifications are subject to change without notice.

COMPACT DISC PLAYER

CDX-497/CDX-397

SERVICE MANUAL

IMPORTANT NOTICE
This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel. It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are already known and understood by the users, and have therefore not been restated.

WARNING:

Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury, destruction of expensive components, and failure of the product to perform as specified. For these reasons, we advise all YAMAHA product owners that any service required should be performed by an authorized YAMAHA Retailer or the appointed service representative. IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form. The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and service departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributor's Service Division.
Static discharges can destroy expensive components. Discharge any static electricity your body may have accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss). IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.

101016

2006 All rights reserved. This manual is copyrighted by YAMAHA and may not be copied or redistributed either in print or electronically without permission.
P.O.Box 1, Hamamatsu, Japan

'06.07

I TO SERVICE PERSONNEL
1. Critical Components Information Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed. 2. Leakage Current Measurement (For 120V Models Only) When service has been completed, it is imperative to verify that all exposed conductive surfaces are properly insulated from supply circuits.

WALL OUTLET

EQUIPMENT UNDER TEST
AC LEAKAGE TESTER OR EQUIVALENT

INSULATING TABLE

Meter impedance should be equivalent to 1500 ohms shunted by 0.15F.
Leakage current must not exceed 0.5mA. Be sure to test for leakage with the AC plug in both polarities.

WARNING: CHEMICAL CONTENT NOTICE!
The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (where applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly other entities) to cause cancer and/or birth defects or other reproductive harm. DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHATSOEVER! Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to solder/flux vapor! If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food.

About Lead Free Solder /

All of the P.C.B.s installed in this unit are soldered using the lead free solder.
Among some types of lead free solder currently available, it is recommended to use one of the following types for the repair work.
Sn + Ag + Cu (tin + silver + copper) Sn + Cu (tin + copper) Sn + Zn + Bi (tin + zinc + bismuth)

Caution:

As the melting point temperature of the lead free solder is about 30C to 40C (50F to 70F) higher than that of the lead solder, be sure to use a soldering iron suitable to each solder.

WARNING: Laser Safety

This product contains a laser beam component. This component may emit invisible, as well as visible radiation, which may cause eye damage. To protect your eyes and skin from laser radiation, the following precautions must be used during servicing of the unit. 1) When testing and/or repairing any component within the product, keep your eyes and skin more than 30 cm away from the laser pick-up unit at all times. Do not stare at the laser beam at any time. 2) Do not attempt to readjust, disassemble or repair the laser pick-up, unless noted elsewhere in this manual. 3) CAUTION: Use of controls, adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.
Laser Emitting conditions:
1) When the top cover is removed, and the STANDBY/ON SW is turned to the ON position, the laser component will emit a beam for several seconds to detect if a disc is present. During this time (5-10 sec.) the laser may radiate through the lens of the laser pick-up unit. Do not attempt any servicing during this period! If no disc is detected, the laser will stop emitting the beam. When a disc is set, you will not be exposed to any laser emissions.

2) The laser power level can be adjusted with the VR on the pick-up PWB. However, this level has been set by the factory prior to shipping from the factory. Do not adjust this laser level control unless instruction is provided elsewhere in this manual. Adjustment of this control can increase the laser emission level from the device.

Optical Pick-up

WARNING
I PREVENTION OF ELECTROSTATIC DISCHARGE
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of component damage caused by electro static discharge (ESD). 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap, which should be removed for potential shock reasons prior to applying power to the unit under test. 2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ES devices. 4. Use only an anti-static solder removal device. Some solder removal devices not classified as anti-static (ESD protected) can generate electrical charge sufficient to damage ES devices. 5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices. 6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material). 7. Immediately before removing the protective material from the leads of a replacement ES divice, touch the protective material to the chassis or circuit assembly into which the device will be installed. CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions. 8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient to damage an ES device).

Grounding for electrostatic breakdown prevention
1. Human body grounding. Use the antistatic wrist strap to discharge the static electricity from your body. 2. Work table grounding. Put a conductive material (sheet) or steel sheet on the area where the optical pickup is placed and ground the sheet.
The static electricity of your clothes will not be grounded through the wrist strap. So take care not to let your clothes touch the optical pickup.
Anti-static wrist strap 1M-ohms
Conductive material (sheet) or steel sheet

I INTERNAL VIEW

17 (11/16")

87 (3-7/16")

I REPAIR NOTES /

None of the components of the following unit can be supplied separately. Each unit must be replaced as a whole in case of a failure. CD Mechanism MAIN P.C.B. FRONT P.C.B.
I HOW TO MANUALLY EJECT THE TRAY /
a. Turn the unit bottom up. b. Using a flatblade screwdriver, turn the loading cam 90 degrees in the direction indicated by an arrow in the figure. c. Gently pull the tray out.
Flatblade screwdriver Loading cam

CN23 CN21 CN22

FRONT (4) P. C. B.

I TEST MODE

Starting Test Mode
a. Connect the power cable to the AC power outlet. b. Press the POWER key while simultaneously pressing W / D (PLAY/PAUSE) and A (STOP) keys of the main W A unit. c. When in the TEST mode, the TEST MODE is displayed for 2 seconds.
2 seconds Starting TEST mode This part is always displayed when in the TEST mode.
1. Function list of panel keys.

Pin name LPFN LPFO PVREF I/O I 3AI/F O 3AI/F Description Remark Pin for receiving an inverted output of the PLL-circuit low-pass The resistance side is connected. filter amp. See an applicable circuit diagram. Pin for the PLL-circuit low-pass filter amp output. The capacitor side is connected. See an spplicable circuit diagram. 1.65V reference supply voltage pin dedicated to the PLL Connected to the VREF and PVREF circuit. within the IC. A 0.1 uF capacitor is connected. VCO filter pin. Input pin for the VCO center frequency reference level. To be connected to the PVREF if the AWRC is not used. 3.3V grounding pin dedicated to the PLL circit. EFM slice level output pin. A capacitor to be connected is seFor both analog and digital slice modes, the output impedance lected according to the servo op= 2.5 k-ohms. eration band. RF signal input pin. Zin: 20 k-ohms, 10 k-ohms, 5 kThe input resistance can be selected, using a command. ohms RF ripple signal input pin. RF equalizer circuit output pin. To be connected to the RFRPI via 0.1 uF and to the RFI via 4700 pF or higher. To be connected to 22 k-ohms and 680 pF in parallel. Connected to the VREF and PVREF within the IC To be connected to 0.1uF anf 100 uF. To be connected to 0.1uF. To be connected to 0.015 uF or higher. To be connected directly to the RFDCI. To ne connected to the AGCI via 0.1 uF.

Pin No. 42

Pin No. 72
To be fixed at H or L when communication is not in progress, so that the pin will not become HiZ.

VCOF VCOREF PVSS3 SLCO

To be fixed at H when communication is not in progress, so that the pin will not become HiZ.
O 3AI/F I 3AI/F O 3AI/F I 3AI/F I 3AI/F O 3AI/F I 3AI/F O 3AI/F
77 To be connected to 0.1 uF. 80 Genelal-purpose I/O (input after a reset). The playback speed mode flag output can be switched, using command bits. 81